-68.63% is the change from 408 to 128
Calculation steps:
[( 128 - 408 ) ÷ 408] x 100 = -68.63%
Formula
Percentage change = [(128 - 408) / 408] x 100
Subtract the new number by the original number
128 - 408 = -280
-280 ÷ 408 = -0.6862745098039216
-0.6862745098039216 x 100 = -68.63%